Mold.



PATBNTED APR. 28, 1908.

E. D. TUCKER.

MOLD.

APPLICATION FILED 00T. 3,1901.

2 SHEETS-SHEET 1.

No. 885,807. PATBNTBD APR. 28, 1908.

E. D. TUCKER.

MOLD.

APPLIOATION FILED 00T. 3.1901.

2 SHEETS-SHEET 2.

ffy? HLM @um @MM/J. MMM i UNITED sTATEs PATENT OEEIOE.,

EDWIN D. TUCKER, OF NEW YORK, N. Y., AssIGNOR To` ROBERT HOE, or NEW YORK, N. Y.

MOLD.

ASpecification of Letters' Patent.

Patented April 28, 1908.

Application led October 3, 1901. Serial No. 77,355.

To all 'whom it may concern.'

Be it known that I, VEDWIN D; TUCKER, a

citizen of the United States, residing at New.

York, county of New York, and State of .New l 5 York, have invented certain n ew and useful Improvements in Molds, ully described and represented in ythe following specification and the accompanying drawings, forming a part of the same.

. This invention relates to certain'improvements in molds and. has reference more particularly to molds which are used in casting stereotype plates employed in printing machines. j In stereotype molds as ordinaril constructed, the cover ispivoted to the ottom of the mold .and the bottom is trunnioned in a stationary frame. In manipulating such a mold it is necessary to rst swing the cover 2o down on the bottom and after locking it inA position swin both the bottom and cover 1nto a vertica position to receive the'metal which is to be poured into it. After the cast has been made, these operations are repeated 1n reverse order.v

It has been roposed to construct stereo-` type molds wit a stationary cover standing in a substantially vertical position and to pivot the. bottom on a slidin carriage, the purpose of this construction ein to avoid the abor of swinging both parts o the mold from a vertical to a horizontal positionand back again .each time a cast is made. This construction, while having the advantage.

that it is not necessary to move the cover of y Ithe mold during the casting operation, 1s eX- pensive to construct, because it embodies a number of complicated appurtenances, and

.' is, furthermore, slow in operation. Molds o f 40 this character have not, therefore, gone into extensive use.

It is the object of this invention to yconstruct a mold 1n which one ofthe arts shall be disconnected from the other an be moved towards and away from it duringthe casting operation, thereby avoidin the labor inci-v om a horizontal dent-to moving both arts to a vertical position ur' the casting Operation, and to accomplish t bymeans of a 5o construction whichls simple, cheap and eiiicient in o eration.

With tliis and other objects in view, the inventionconsists in certain constructions and in certain parts, improvements and combinations as will be hereinafter fully described the construction s and then specifically pointed out in the claims hereunto appended. V

Referring to the drawings, in which like characters of reference indicate the same .parts-Fi ure 1 is a side elevation of a' stereotype mol constructed in accordance with the invention, the mold being shownfin its o en position. Fig. 2 is a front elevation of. t e 'construction shown in Fig. 1,' the mold being also shown o en. Fig. 3 is a detail view. Fig. 4 is a sie elevation of the mold in its closed position, and Figs. 5,' 6 and 7 are detail views illustrating certain features of the construction em loyed. 1 f

Referring to the rawings, which illustrate one embodiment of the invention, 1 indicates a base which may be of any suitable construction. Thisbase serves to support vthe cover 2 ofthe mold this cover being shown as stationary. The cover is mounted on the base 75 in a nearly vertical position, although it is slightly inclined to a vertical line, and may be secured lto the base in any suitable manner. As shown, it is provided with an integral flange 3 through whichpass screw bolts 4 which pass through ears on the base. In Own, the cover has a curved face, the mold being intended to cast curved plates. The bottom of the mold, which is marked 5, is curved in outline on an arc corresponding to the curve of the cover, and is provided with trunnions 6 by which it is pivoted to a support. This support is mova le'and may be varied widely in the details of its oonstruction. Preferably, however, it will be a rocking support. As shown, this support comprises a pair ofv arms 7 which are rovided at their outer ends withbearings w 'ch receive the trunnions 6. The means for sup'- porting and operating the arms, the present construction, comprise a shaft 8 to which the arms are secured in' any suitable manner, as by keys, said .shaft being journaledin thesides ofthe base 1.

With the construction so far described, it, is obvious that the bottom`may be rocked with respect to its supporting arms, and the arms themselves rocked to carry the bottom toward the cover. Thel bottom may be moved and the shaft rocked through any desired agency. Asshown, however, the bottom is provided with handles 9 which extend from opposite sides thereof and whlch are. seized by the workmen whooperate the 11oA yit l5,which is or may the pins 10v reach the straight mold.

lever 14 will be so arranged as to `ass the mold. `Inclosing the mold, the bottom is first swung downward and then forward toward the cover. v

l Means are provided to control the pivotal movement of the bottom so that as it moves toward the cover it may come in substantial parallelism therewith. These controlling means may be of any suitable construction. As shown, the bottom is provided with pins or studs 10 which engage in slots 11 ,formed in guide pieces 12 which are secured tothe base 1 in any suitable manner. The ins 10 are or may be mounted in the ends o a lug or boss 13 which is cast on the bottom. The slots 1l are generally L-shape in configuration. As the bottom and support are rocked toward the cover, the pins 10 pass down through that part of the slots 11 which in the construction shown are nearl vertical, thus controlling the downwar movement ofthe bottom. When the bottom has been moved sufficiently to cause the pins to enter the horizontal part of the slots, the bottom will be in substantial parallelism with the cover, though not truly parallel therewith.

While the momentum of the movement of the bottom might be sufficient to carry the parts of the mold into closed relation, difculty might be eX erienced in se arating the parts of the mol Meansare, t erefore, preferably rovided for insuring a relative movement lbetween the cover and the bottom after the two have reached a substantially parallel position, these means operating both to finally close the mold and to initially open the same.

The means employed for the purpose of .giving the cover the movement required may be widely varied in construction. As shown, however, they consist of a lever 14, said lever having a fork 15 which engages the lug 13 in ,which the pins 10 are mounted.

be suitably journaled in the base 1. Any suitable means may be employed for operating the lever 14. As shown, however, a hand lever 17 is emloyed for this purpose, this hand lever beingkeyed to the'end of the shaft 16 or secured thereto in any other suitable manner. The operation of the lever 14 will be clearly understood from an inspection vof Figs. 6 and 7. Fig. 7 shows the lever 14 and its fork 15 in position to receive the boss 13 as bottom of the straight part of the slots 11. When the arts have reached this position, the hand ever 17 is thrown by the attendant and the bottom is thrown forward, the pins passing. from the part of the slots, thus closing the In the` preferred construction, this center of the shaft 16 when the mol is fully closed. In this position, therefore, the

lever 14 is mounted on a shaft 16,

'too

lever serves to lock the mold when the parts are in closed position. The detail view (Fig. 6l illustrates the position which the arts occupy when the mold is closed and ocked.

When it is desired to open the mold, the lever 17 is thrown in a reverse direction, causing the pins 10 to travel backward in the straight art of the slots 11 until they reach the position illustrated in Fig. 7 after which `the mold can be tipped back and the plate removed.

A power device is preferably provided to assist in throwing the bottom forward. While this power device may be variously constructed, it preferably consists of a torsional spring 19 (see Figs. 2 and 3) which is wound around the shaft 8 and has one of its ends bearin on the Abottom of the base 1 and its other en secured in a perforated plate 20 secured to or forming a art of a collar 21 mounted on the shaft 8, t is plate being provided with a series of holes 22, so that the tension of the sprinlg may be ad'usted. The spring is so arrangJ that it will e placed under tension as t e bottom of the mold is swunlglback into the position shown in Fig. 1. It w' be understood that as the bottom swings back into this position it is carrying the cast late and the sprue thereon. The weight o this plate is considerable, especial y where lar e plates are being cast, and assists materia y in overcoming the resistance of the spring when the mold is opened. When the plate has been removed, however, the power of the spring, which may be made very stron can be relied upon to perform a considerabe pbart `of the work necessary in returningthe ottom. A

In order to maintain the bottom, when itis open, in a substantially horizontal position, so that the cast plate may be readily removed, a holding or locking device is preferably provided. -This holdin or locking device may be of any usual escription. As shown, the bell crank lever 23, 24 is provided, said lever being pivoted to the base at 25. This lever is so arranged that the arm 23 will take under the lug 13 when the bottom is thrown back, as shown in Fig. 1, thus holding it in a horizontal position. This Abell-crank lever is or ma be provided with a counterweight 26 an with a pedal 27. When the. mold is to be closed. the operator steps on the pedal 27 forcing the arm 23 of the bell-crank out from under the boss 13 so that the bottom is free to be swung down. After .the operator removes his foot from the pedal, the bellcrank is brought forward by the counterweight so as to be out of the way when the bottom has returned to open position.

While the slotted guides 12 mi ht be depended on to prevent ,the bottom rom going far as the mold is thrown open, in order to relieve the strain on these parts stops are Lpreferably'provided to limit i l senseo? While the mechanism in which the invention is embodied is an effective one for the purpose described, itis to ybe understood that may be 4caused "to move towar parttoward the other spect to the supp the invention Imay be embodied in other 'mechanisms which diler widely from the one hereinbefore'set forth. A'Ihe invention is not, therefore, to be confined to the recise constructions hereinbeforev described).

What is claimed is f v1. Ina stereotype plate casting mold, the 4combination withthe bottom and cover, of a. sup ort on which one 'of said parts is pivotel said-support being ca acitated to re ceive a movement whereby t e ivoted partl ds and away from the other part of the mold and to swing with respect tothe support, means includin a'pin and slot connection 'for controlling sai pivotal movement, and a power devicefor assisting in the movement of said pivoted part, substantially as described.

2. In a stereotype plate casting mold,'the combination with the bottom and cover, cfa support on which one of said parts is pivoted, sai support being capacitated tio receive a movement whereby the 'pivoted part may be caused to move towards and away from the other part ofthe moldl and to swing' with reort, means includinga pin and slot connection for controlling said pivotal movement, and a spring for assistingv in the. movement of said ivoted part toward the other part, substantially as described.

3. In'a stereotype plate casting mold, the combination with a stationary cover, of a rocking support, a-bottom pivoted thereto,` whereby said-v bott-oni -maynswing with respectto the support and may move with it` toward and away from the cover, means/in.- cluding `a pin andslot connection for conil vtrolling said pivot-al movement, 'and a power device for assisting inthe movement-of the bottom toward the cover, substantially as' described.

4. In a stereotype plate casting mold, the combination with a stationary cover, of a rocking support, a'bottom pivoted thereto, whereby said bottom may swing with re` speci'. to thesupport and may move with it toward and away from the coverfmeans in` cluding a vpin and slot connectionl for`con troll-ing said pivotal movement,`and a spring for assisting in the movement-j of the bottom" toward the cover, substantially as described.

5. The combination With-thebottom and-'- cover of a' stereotype lplate casting mold, of alrocking support on w ich' one-of said partsfisf' pivoted, W ereby said part mayswing with other r`rocking support on w 'tially as described.

p tom into substantial closed respect to the support and move with it to.I

wards and away from the other part, means tively forcing the two parts together to close the mold, and .a spring for assisting. in the movement of the pivoted part toward the art, substantially as described. 6. he combination with the bottom and cover of a stereotype. late casting mold, of a lliich one of said vparts is pivoted, w ereby said part may swing wit-li respect to the 4support and move with it towards and awayrom the other part, means for controlling the pivotal movement so as to bring said pivoted part into substantial parallelism with .the other part, means for positively forcing the two parts together to close the'mold, said means being constructed to lock the mold .inits closed position, and a spring for assistingA in the movement of the pivoted part toward 7. In a stereotype plate casting-mold, the combination with a stationary cover, lof a Irocking su ort, a bottom pivoted thereto whereby said, to the support and move with it towards and away from the. cover,jmeans for controlling the' pivotal movement parallelism with the cover, means for positivel forcing the bottom against the cover to c ose the mold, and a spring for assisting in the movementof the bottom toward thecover, substantially as described. f l

8. In a stereotype plate casting mold, the combination witli, a stationarycover, of `a rocking support,l a bottom pivoted thereto whereby said bottom may swing with respect to the support and move with it toward and away from the cover, means for controlling the pivotal movement so as to bring said bottoni into substantial parallelism with the cover, means forrpositivelyforcing the bottom against the cover to close the mold, Said. means being constructed to lock the' mold in its closed position, and a spring forh assisting in the movement of the bottom'toward the cover, substantially as described'.

9. In a stereotype plate casting mold, the combination with the bottomv and a stationary cover, of a rockingsu port to which said bottom is'pivoted, whereby the bottom may be moved with respect to "the support and with `it toward andaway.` from the cover, means includinga. pin and slot connection for controlling the pivotal movement of the bottom, and a 'lever arranged tooperate upon 'the bottom lto force it towards and away from the cover, said lev'er being constructed to pass the center as the bottoni moves into ositi'on and thuslock it in this position, su stantially as described.

the other part, substan- I i bottoml may swing with respect so as to bring -said bot- 'and slot connection for controlling the ivotal movement of the bottom, and a for ed lever constructed to engage the projection on the bottom to force it towards and away from the cover, substantially as described.

11. In a stereotype plate casting mold, the combination with a stationary cover and a bottom having a rojection, of a rocking support to which sai bottom is pivoted,whereby the bottom 'may be moved with res ect to the su port and with it toward an away from t e cover, means including apin and slot connection for controlling the pivotal movement of the bottom, and a forked lever constructed to engage the projection on the bottom to force it towards and away from the cover, said lever being constructed to pass thes center as the 'bottom moves into closed position and thus lock itin this position, substantially as described.

12. In a stereotyple late casting mold, the combination with t e ottom and a stationary cover, of a rocking support to which sai'd bottom is pivoted, where y the bottom` may be moved with respect to the support and with it toward and away from the cover,

`with it ltoward an means including a pin and slot connection for controlling the pivotal movement of the bottom, a lever arranged to operate upon the bottom to force it towards and away from the cover, and a spring for assisting in the movement of the bottom toward the cover, substantially as described. y

13. ln a stereoty e plate casting-mold, the combination with t e ottom and astationary cover, of a rocking-support to which said bottom is pivoted, where y the bottom may be moved with res ect to the support and away from the cover, means including a pin and slot connection for controlling thepivotal movement ofthe bottom, a lever arranged to operate upon the bottom to force it towards and away from the cover, said lever being constructed to ass the center as the bottom moves into closed positlon and thus lock it in this position, and a s ring for assisting in the movementof the ottom toward the cover, substantially as described. n 14. In a stereotype plate casting mold,- the combination with a statinary cover and a bottom having a projection of a rocklng support to which said bottom 1s pivoted, wherey the bottom may be moved with respect to the support and with it toward and away from t e cover, means including a pin and slot 4connection for controlling the pivotal movement of the bottom, a forked lever constructed to engage the projection on the bottom to force it towards' and away from the cover, and a spring for assisting in the movement of the bottom toward the cover, substantially as described.

15. In a stereotype plate casting mold, the combination with a stationary cover and a bottom having a projection, of a rocking support to which said bottom is pivoted, wherey the bottom may be moved with res ect to the su port and with it toward an away from tlie cover, means including a pin and slot connection for controlling the pivotal movement of the bottom, a forked lever constructed to vengage the projection on the bottom to force it towards and away from the cover, said lever being constructed to pass the center as the bottom moves into closed position and thus lock it in 'this position, and a spring for assisting in the movement of the bottom toward the/cover, substantially as described.

16.A In a stereotype plate casting mold, the combination with a cover and a bottom having a projection one of said parts being stationary, of a shaft, a support carried thereby, pivotal connections between the support and the movable part of the mold, means for controlling the pivotal movement of said part, said means including a pin and slot, a forked lever constructed to engage the projection on the movable art, and a torsional spring encircling the s aft, said spring bein placed under tension by the movement of t e shaft as the pivoted part moves away from the other part to assist in its return movement,

substantially as described.

17. ln a stereotype plate casting mold, the combination with a stationary cover, of a shaft, a support' connected thereto, a bottom vhaving a projection p ivoted to the support, a

pin carried by the ottom, a slotted guide with which the pin enga es, said in and guide serving to control tie pivota movement of the bottom, a forked lever for engaging the projection on the bottom as it comes into parallelism with the cover and operating to force the bottom towards and away from the cover, said lever being constructed to pass the center as the bottom moves into closed position, and a torsional s ring encircling the shaft, said spring being p aced under tension as the bottom swings away from the cover whereby it ,assists in the movement of the bottom toward the cover, substantially as described.

In testimon whereof, I have hereunto set my hand, in t e presence of two subscribing F. W. H. CRANE, S. RoEHM. 

